House Extension in city

Find House Extension Prices in city

Home > Extensions & Conversions Projects > House extensions > Belfast

House Extension in city

House extension includes a wide variety of benefits which makes it easy to see why the extension could be a great uptick in the prospective price of your property in terms of sales. So if you're looking to develop a new home extension but still not persuaded about the project, we're below to aid you. Being fully aware any type of residence construction job is normally a hefty financial investment, there's a big demand to be set on your decision prior to setting up the commencement of any kind of job. So are house extensions worth it? Below are several of the top advantages provided by house extensions to help you choose if it's one of the most ideal path for you.

 

What's Involved in Building an Extension?

The actions will certainly differ depending upon the scope of your extension, yet you can expect some, if not all, of the listed below to be entailed when adding an extension to your home:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold agreement (if applicable) to see to it you can do what you wish to do.
  3. Employing an architect  to draw up the plans, considering your expected usage (kitchen, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy provider to allow them know of the planned job ahead of it starting.
  6. Acquiring car parking allows if needed for your service providers to guarantee they have simple accessibility to your residential building.
  7. Seeing to it all intended job drops within permitted allowables.
  8. Clearing up the area and also digging deep into if necessary, including the removal of trees.
  9. Building job can begin.

 

What is the price of a house extension in city?

If you're taking into consideration including a two floor house extension, after that establishing a allocate this job would be a great method to start. Similar to a rear extension, a 2 storey extension usually leaves the remainder of the building requiring some work and also, because of its size, this might imply the re-development of the whole house - which is why they can be very expensive. Some of the various other influencing elements that can have large influence on a two storey house extension expense includes: your area, the size of the build, complexity of the style (anything beyond the basic build will generally need more knowledge and time), the glazing to be integrated (the more the glass used in the job, the a lot more the material expense), along with the group made use of.

Average House extensions cost in Belfast

The regular cost of House extensions are £50,000 in Belfast. Costs vary based upon the materials and the company picked. The upper price range can be as high as £68,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£42,000

Avg. price

Avg. price
£50,000

Avg. price high

Avg. price high
£68,000

£68500

£51375

£34250

£17125

£0

Prices based on actual House extensions costs for Belfast, as reported by local LeadsDoWork members.

House extensions installation cost in Belfast 2026

Labour cost £27,000
Material cost £10,500
Waste removal £2,500
Time frame: 10-14 weeks

House extensions searches in July 2026

House extensions Projects in Belfast in June 2026

6,219

Requests for quotations in Belfast in June 2026

30

Requests for House extensions quotations in Belfast in June 2026. 0% change from May 2026.

80

Requests for House extensions quotations in County Antrim in June 2026. 0% change from May 2026.

Source: Numbers calculated based on the search volumes in major search engines

House extensions searches in cities and towns near Belfast June 2026

30

Requests for quotations in Belfast in June 2026

13

Requests for quotations in Lisburn in June 2026

12

Requests for quotations in Strabane in June 2026

11

Requests for quotations in Newtownabbey in June 2026

10

Requests for quotations in Banbridge in June 2026

Belfast

The capital of Northern Ireland is the 14th greatest city in the British Isles, which has a population boasting 267,500. Belfast continues to be a city identified for its industry and until recently was responsible for shipbuilding, tobacco, rope making and linen. As one of Britain's principal cities, home selling prices usually are increased in Belfast, so retain and improve on your property's value with household improvements undertaken by vetted trades-people.

Looking for House extensions in Belfast?

Get free quotes from local builders

Get free quotes

Similar Customer Enquiries for House extensions in Belfast

15 Jun

House Extensions

Belfast - BT14

Enquiry from: Eimear F

Start Date: Immediate

2 story extension, bathroom fitted upstairs

Post a similar request >

14 Oct

House Extensions

Belfast - BT17

Enquiry from: Michael M

Start Date: Immediate

Im interested in an extension I've 2 in mind *** i would prefer is 1 with like a car port with the bedroom on top, so i cam excess to the back garden, or the double extension with the garage bottom an...

Post a similar request >

09 Oct

House Extensions

Belfast - BT7

Enquiry from: Cynthia L

Start Date: Immediate

Extending kitchen and maybe attic into loft

Post a similar request >

13 Sep

House Extensions

Belfast - BT14

Enquiry from: Thomas A

Start Date: Immediate

Ext. Over existing kitchen and yard with new downstairs toilet and shower .

Post a similar request >

21 Jul

House Extensions

Belfast - BT5

Enquiry from: Sushant S

Start Date: Immediate

Need kitchen to be extended , Knock of the wall between dining room and kitchen. Total extensions will be 13 SQ meters

Post a similar request >

03 Sep

House Extensions

Belfast - BT9

Enquiry from: Chham R

Start Date: Immediate

customer in the belfast area made an enquiry a couple of projects including house extension.call anytime and arrange an appointment to discuss. below is some details about this project: are you the pr...

Post a similar request >

29 Aug

House Extensions

Belfast - BT10

Enquiry from: Kathy M

Start Date: Immediate

Max 15 foot by 15 foot extension with kitchen and utility

Post a similar request >

12 Jun

House Extensions

Belfast - BT14

Enquiry from: Kate G

Start Date: Immediate

mrs requested quotes for house extension from a builder around belfast. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information below is...

Post a similar request >

24 May

House Extensions

Belfast - BT9

Enquiry from: David M

Start Date: Immediate

extend existing ground floor side extension to the first floor. the side extension is 16sqm and is positioned between house and integrated garage. the side extension is partially rectangular in shape ...

Post a similar request >

26 Nov

House Extensions

Belfast - BT5

Enquiry from: Jason R

Start Date: Less than one month

customer made an enquiry for house extension and confirmed on the quotatis site they would like quotes from a builder.mr lives in the belfast area and would like a call to discuss options.see below de...

Post a similar request >

21 Nov

House Extensions

Belfast - BT14

Enquiry from: Sam M

Start Date: Immediate

customer in belfast area has requested that we arrange quotes for their house extension project.they are considering various options and would like to discuss with a builder directly.please call to di...

Post a similar request >

01 Nov

House Extensions

Belfast - BT5

Enquiry from: Tori C

Start Date: Immediate

we have a bungalow with an upstairs but would like more room upstairs… so using timber frame to make the house double storey. are you the property owner: owner of the property looking for: double st...

Post a similar request >

28 Oct

House Extensions

Belfast - BT5

Enquiry from: Andrew M

Start Date: Immediate

customer in the belfast area made an enquiry a couple of projects including house extension.call anytime and arrange an appointment to discuss. below is some details about this project: are you the pr...

Post a similar request >

05 Oct

House Extensions

Belfast - BT5

Enquiry from: James A

Start Date: Immediate

customer made an online enquiry for house extension and confirmed on telephone and email they would like a call with a builder to discuss prices.please call to arrange an appointment to quote. are you...

Post a similar request >

19 Sep

House Extensions

Belfast - BT6

Enquiry from: Michael G

Start Date: Immediate

customer has a extensions & conversions project they are looking to have done, specially they want quotes for house extension. they are unsure of options so would like to discuss with a builder.confir...

Post a similar request >

02 Sep

House Extensions

Belfast - BT4

Enquiry from: Karen M

Start Date: Less than one month

module for back of house to extend kitchen and back room are you the property owner: owner of the property looking for: single storey extension do you have planning permission: no do you have plans dr...

Post a similar request >

09 Aug

House Extensions

Belfast - BT10

Enquiry from: Son M

Start Date: Immediate

i want to extend 3 bedroom semi-detached house as follow: 1 - extend kitchen and dining room to the rear (around 2 meter) 2 - converting garage to a home office 3 - replacing oil by gas 4 - adding a ...

Post a similar request >

06 May

House Extensions

Belfast - BT29

Enquiry from: Colm Q

Start Date: Immediate

20 square meter double garage thet matches in with the house i have aractit plans but its a sign door with a pitched roof tand electricity with a light a couple of double sockets and electric door are...

Post a similar request >

30 Apr

House Extensions

Belfast - BT5

Enquiry from: John M

Start Date: Less than one month

customer in belfast areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via telephone, sms and email at 30/04/2021 11:15.please call...

Post a similar request >

15 Apr

House Extensions

Belfast - BT13

Enquiry from: Victoria V

Start Date: Immediate

customer in the belfast area made an enquiry a couple of projects including house extension.call anytime and arrange an appointment to discuss. below is some details about this project: are you the pr...

Post a similar request >

Local & reliable builders near me

Tell us about your house extensions project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in Belfast

Get free, no-obligation local house extensions quotes from 4 verified builders working in Belfast.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.

Our reviews

Average

Would highly recommend

Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

Good easy way to find a selection of…

Good easy way to find a selection of trades you need all in one place.

Love Local Quotes it's a big part of my …

Love Local Quotes it's a big part of my Business I would recommend to anyone

FAQs

when do you need planning permission for a house extension?

If you’re planning on adding a house extension to your property, you’d probably be worried about whether or not your proposed extension would require a planing permission. Well, it may be relieving to know that not every house extension project would require a formal consent, and in fact, several extensions are covered by the permitted development rights. Not only can this save you a considerable amount of time especially at the project’s planning phase, but it’ll also save you money on the application fee. In the UK, single storey extensions to the house’s rear can be 3 metres deep for both semi detached houses and terraces or 8 metres deep for detached homes.

So how do you know when you’d require a planning permission for your home extension? Well, if your extension plan fits these criteria explained below, then your project is most likely going to be allowable as a permitted development.

• Extensions, which includes previous additions, must not go beyond half of the original house’s total surrounding land area.

• The main elevation, or side elevation where it fronts the highway, must not be extended forward.

• For single storeys, the rear additions must not extend more than the original house’s rear by more than 3 metres in both semi attached homes and terraces (4 metres for detached houses).

• Extensions to the side must be a single storey with a height not exceeding 4 metres and not going beyond 50% of the original house’s width.

• Extensions hat within 2 metres of a boundary should have a eaves height not more than 3 metres.

• Multi storey addition must not extend beyond the original house’s rear wall by a maximum of 3 metres or 7 metres of the boundary opposite the rear wall.

• Permitted development rights do not apply in listed buildings or designated areas.

where to start with a house extension?

Have you decided to improve your property instead of moving? The common problem most homeowners face after deciding to embark on a home extension project is not knowing where to start. In this article we’ll walk you through everything you need to consider and put in place before commencement of your home extension project.

• Is the extension worth it?

Before breaking the bank, you must be sure that the project will add good value to your home. In terms of “value, this is not only limited to the financial gain after disposal of the property, but also several other juicy benefits to be derived from extending your home like an extra living space for the household to spread out and more.

• Do you need a planning permission?

Check with your local authority to determine whether or not you’ll require to submit an application. You can also consult a building expert like an architect for advice.

• What are the building regulation?

Even though planning permission can be dodged, you can not avoid building regulations. These regulations are the set national minimum standards for construction and design which you must comply with to ensure the safety of the individuals in and around it.

• Who will design the extension?

You have to decided whether you’ll hire a professional architect to design the extension or not.

• Who will manage the building work?

If your home extension project is designed and built by a professional company, they’ll be responsible for the management. However, if you decide to use an architect or designed it yourself, you’ll have to hire a main contractor to manage the build.

• How to set the budget?

There are so many factors that can affect the cost of an extension, so it’s better to get the costs from your builder before proceeding.

• Do I need yo inform my home insurance firm?

Absolutely! This is very important as the new extension may affect the rebuilding cost of your property which could have an impact on the policy premium.

• Do I need to inform my neighbours?

It’s very important to discuss your plan with your neighbours before applying for a planning permission and communicate about the concerns they might have.

how much is a double house extension?

A double house extension is basically a construction to any aspect of your house that elevates up to offer two floors of space. It can be structured to suit your existing home in two storeys or as a side wing on a taller property. If you’re considering building a double house extension, then estimating the cost is a very important task to do before commencing the project. In this article, we’ll give you an idea of the cost of a double house extension so you can estimate yours accordingly.

The double house extension cost depends on several factors that’s specific to your home as well as your design choice. These includes:

• Location of your property. Places like London and the southeast will generally cost more than the other regions due to higher demands.

• Accessibility of the site. The ease of your site’s accessibility also plays a key role in the price.

• Size of the extension. The more the extension’s size in footprint and square metres, the higher the possible costs.

• Materials used in making the roof as well as the complexity of the roof design.

• Your choice of finishing. These includes flooring window and door frames, glazing, underfloor heating and roof lights.

• Your property’s soil type. Different types of soil requires varying treatments as well as materials to develop solid foundations.

Constructing a double house extension is a quite simple build in terms of technicality when its to the side or rear of your house as this can also help you save some money. Generally, considerably expanding your home’s space by building a double house extension will cost within the range of £1,500 per m2 to about £2,800 per m2.

how to finance a house extension?

Do you want to beautify and increase the value of your home? If yes, a refurb and house extension is definitely a great option to consider. Depending on your home extension project, the value that’ll be added to your home’s resale value varies. However, the cost of completing a house extension project can be huge, so you just might want to consider your financing options. Fortunately, there are various options through which your house extension project can be funded with each having its own pros and cons. Your specific circumstances will determine the one that’s going to work best for you, so let’s take a look at some of the best options to help you fund your project.

• Home Remortgaging

The process whereby a mortgage is transferred from one provider to the other is known as remortgaging. This is usually done to generate funds for a project by entering a more lengthy repayment term commitment when switching. If you want to raise your funds in a quick manner, this process works best.

• Savings

This is a good reason to cultivate a good saving habits. If you’ve been able to save up some mega bucks then you’d probably won’t have to borrow money to finance your house extension.

• Unsecured Loans

If you do not buy into the idea of borrowing more against your property, you may just be able to apply for an unsecured loan especially if you have a good credit record. A secured loan makes use of collaterals like a car or house to serve as a cover for the lender, meanwhile an unsecured loan is based mainly on the credit managing history of the borrower.

• Credit Card

There are some great benefits that comes with financing your small or medium scale extension project with your credit card. Not only does it offer some real lifeline if problems arise during the project, but you can also avoid paying excessive interest on the investment by ensuring your deal has a 0% introductory rate.

House extensions

Other Top Projects in Belfast

Customer Reviews

Overall rating:


Belfast House extensions installers are rated 0 out of 5 based on 0 reviews of 2 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with House extensions projects that have been connected with House extensions pros to help them. All House extensions contractors All Belfast House extensions contractors

Are you a builder in Belfast?

We can help you get more house extensions work with our qualified job leads and boost your business.

Join today